Aiwa LCX-K170 Service Manual
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Aiwa LCX-K170 Service Manual

Aiwa LCX-K170 Service Manual

Compact disc stereo system
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SERVICE MANUAL
COMPACT DISC
STEREO SYSTEM
This Service Manual is the "Revision Publishing" and replaces "Simple Manual"
LCX-K170(HRJST)(S/M Code No.09-993-324-7T1).
LCX-K170
BASIC TAPE MECHANISM : TN21ZSC-1653
BASIC CD MECHANISM : KSM-2131 BDM
S/M Code No. 09-993-324-7R1
HRJ(ST)

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  • Page 1 LCX-K170 HRJ(ST) SERVICE MANUAL BASIC TAPE MECHANISM : TN21ZSC-1653 COMPACT DISC BASIC CD MECHANISM : KSM-2131 BDM STEREO SYSTEM This Service Manual is the “Revision Publishing” and replaces “Simple Manual” LCX-K170(HRJST)(S/M Code No.09-993-324-7T1). S/M Code No. 09-993-324-7R1...

  • Page 2: Table Of Contents

    TABLE OF CONTENTS SPECIFICATIONS ..........................3 PROTECTION OF EYES FROM LASER BEAM DURING SERVICING/ Precaution to replace Optical block......................4 ELECTRICAL MAIN PARTS LIST ....................... 5-8 TRANSISTOR ILLUSTRATION ......................8 WIRING-1 (MAIN) ..........................9, 10 SCHEMATIC DIAGRAM-1 (MAIN) ....................11, 12 WIRING-2 (VCD/FRONT) ........................

  • Page 3: Specifications

    SPECIFICATIONS • Design and specifications are subject to change without notice...

  • Page 4: Protection Of Eyes From Laser Beam During Servicing

    PROTECTION OF EYES FROM LASER BEAM DURING SERVICING This set employs laser. Therefore, be sure to follow carefully the CAUTION instructions below when servicing. Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous WARNING! radiation exposure.

  • Page 5: Electrical Main Parts List

    ELECTRICAL MAIN PARTS LIST REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION 87-010-405-080 CAP, ELECT 10-50V 87-010-404-080 CAP, ELECT 4.7-50V 87-A20-591-010 IC,BA5417 87-010-405-080 CAP, ELECT 10-50V 87-A21-373-010 IC,BA328 87-010-404-080 CAP, ELECT 4.7-50V 87-A20-547-010 C-IC,CXA1992AR 87-010-405-080 CAP, ELECT 10-50V 87-A20-919-040 C-IC,BA5915FP 87-A20-917-010...
  • Page 6 REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C508 87-010-545-080 CAP, ELECT 0.22-50V CF802 87-008-261-010 FILTER, SFE10.7MA5-A C509 87-010-545-080 CAP, ELECT 0.22-50V CN401 87-099-043-010 CONN 2P EH C510 87-010-263-080 CAP, ELECT 100-10V CN601 87-099-719-010 CONN,30P TYK-B(X) C511 87-018-132-080 CAP, CER 2200P-16V...

  • Page 7: Transistor Illustration

    REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION REF. NO PART NO. KANRI DESCRIPTION C161 87-010-182-080 C-CAP,S 2200P-50 B C358 87-010-197-080 CAP, CHIP 0.01 DM S504 87-036-170-080 TACT SWITCH D550 87-CL5-602-010 LED,SLR342-MG3F C359...

  • Page 8: Wiring-1 (Main)

    WIRING-1 (MAIN) MAIN C. B(INSERTED PARTS) MAIN C. B(CHIP PARTS) J403 PHONES L403 R428 R417 C416 R413 R415 D414 C414 D411 Q403 J403 SPEAKER Q404 C427 C495 D410 C496 Q406 C436 SW301 R419 C421 C419 R418 C435 CN401 C304 C418 C302 C408 R405 R408 D3022...

  • Page 9: Schematic Diagram-1 (Main)

    SCHEMATIC DIAGRAM-1 (MAIN) T218 S301...

  • Page 10: Wiring-2 (Vcd/Front)

    WIRING-2 (VCD/FRONT) FRONT C. B (COMPONENT SIDE) VCD C. B (COMPONENT SIDE) R536 C503 JR211 R537 IC303 IC302 R546 R545 JR212 R379 C512 C288 C372 C287 C291 R291 C286 R287 C295 R284 R285 C285 R550 C517 R281 C289 C290 Q213 R301 R548 R557...
  • Page 11 FRONT C. B TO/FROM MAIN C. B CN601 (CONDUCTOR SIDE) S101 (OPEN / CLOSE) VCD C. B (CONDUCTOR SIDE) REPEAT J301 VIDEO R294 R296 C303 R293 J301 Q301 C302 R304 R398 R203 R224 IC203 C201 R363 C344 R362 NTSC R361 R365 R366 R364...

  • Page 12: Schematic Diagram-2 (Vcd)

    SCHEMATIC DIAGRAM-2 (VCD 1/2) SWITCHING REGULATOR AC/DC CONVERTER...

  • Page 13: Schematic Diagram-3 (Vcd)

    SCHEMATIC DIAGRAM-3 (VCD 2/2) 1/2 DIVIDE VCK OSC OR GATE DELAY MUTE NOISE SHAPER D/A CONVERTER...

  • Page 14: Schematic Diagram-4 (Front)

    SCHEMATIC DIAGRAM-4 (FRONT) D545-549 SLR,342-MG3F...

  • Page 15: Voltage Chart

    VOLTAGE CHART...

  • Page 18: Ic Description

    IC DESCRIPTION IC, CXA1992AR Pin No. Pin Name Description Output terminal for focus error amplifier. Internally connected to window comparator input for bias condition. Input terminal for focus error. FDFCT Capacitor connection terminal for time constant used when there is defect. This pin is connected to GND via capacitor when high frequency gain of the focus servo is attenuated.
  • Page 19 Pin No. Pin Name Description RF_I Input terminal by capacity combination of RF summing amplifier. RF_O Output terminal of RF summing amplifier. Checkpoint of Eye pattern. Anti-reverse input terminal for RF summing amplifier. RF_M The gain of RF amplifier is decided by the connection resistance between RF_M and RFO terminals.
  • Page 20 IC, CXD2540Q Pin No. Pin Name Description Focus OK input. Used for SENS output and the servo auto sequencer. Spindle motor output filter switching output. Spindle motor on/off control output. Spindle motor servo control. High, when sampled value of GFS at 460Hz is high. LOCK Low, when sampled value of GFS at 460Hz is low by 8 times successively.
  • Page 21 Pin No. Pin Name Description DA11 DA11 output when PSSL=1. GTOP output when PSSL=0. DA10 DA10 output when PSSL=1. XUGF output when PSSL=0. DA09 DA09 output when PSSL=1. XPLCK output when PSSL=0. DA08 DA08 output when PSSL=1. GFS output when PSSL=0. DA07 DA07 output when PSSL=1.
  • Page 22 Pin No. Pin Name Description DATO Serial data output to SSP. XLTO Serial data latch output to SSP. Latched at the falling edge. CLKO Serial data transfer clock output to SSP. Mirror signal input. Used when the number of tracks is 128 or more for the 2N-track MIRR jump and M track move of the auto sequencer.
  • Page 23 IC, CL680-D1 Pin No. Pin Name Description — No connection. — GND. CD BCK Bit clock input from CD DSP. CD DATA Data input from CD DSP. CD LRCK LRCK input from CD DSP. CD C2PO C2 pointer input from CD DSP. —...
  • Page 24 Pin No. Pin Name Description Y OUT Video signal “Y” OUT. AVDD DAC — Analog power supply (DAC) 3.3V. AGND DAC — Analog ground. R REF Reference resistor input. V REF Voltage reference input. AVDD DAC — Analog power supply (DAC) : 3.3V. C OUT Video signal “C”...
  • Page 25 Pin No. Pin Name Description __________ HINT Micon interface. (Host interrupt) CDG SCK CD-G serial clock input. — Ground. Micon interface. (Host clock) VDD3 — Power supply 3.3V. HD IN Micon interface. (Host data in) VDD3 — Power supply 3.3V. HSEL Micon interface.
  • Page 26 IC, LC867248A-5H31 Pin No. Pin Name Description O-SCONTM M62439SP control. open drain output. O-SCONTL O-TUDI Tuner control. CMOS output. I-TUDO Tuner control. O-TUCL Tuner control. CMOS output. O-COIN CD control. open drain output. I-SQOUT CD control. ___________ O-CQCK CD control. open drain output. O-RWC _______________ O-CLKSFT...
  • Page 27 Pin No. Pin Name Description 83-86 COM0-COM3 LCD common output. I-INIT Initial setting input. O-BEAT Beat selector output. “H” during selection. CMOS output . VSS3 — GND. VDD3 — O-QSDON Q sound ON/OFF output. “H” at ON. CMOS output . O-TUCE Tuner chip enable output.
  • Page 28 IC, SM5878AN Pin No. Pin Name Description MODE = H: Soft mute ON/OFF terminal. (Mute at H). MUTE MODE = L: Attenuator level DOWN/UP terminal. (DOWN at H). DEEM De-emphasis ON/OFF terminal. (De-emphasis ON at H). Oscillator clock output. (16.9344 MHz). DVSS —...
  • Page 29 IC, LC74781M-9017 Pin No. Pin Name Description VSS1 — GND connection terminal. (Digital ground terminal). Xtal IN External X’tal and capacitor for internal sync generator, or the external clock are Xtal OUT connected to this terminal. (2fsc or 4fsc). Either the external clock input mode or the X’tal generator mode is selected by this CTRL1 selector terminal.
  • Page 30 Pin No. Pin Name Description ______________ Controls whether or not to input the VSYNC signal to the SEPIN input. L: to input the CTRL3 ______________ ______________ VSYNC signal. H: not to input the VSYNC signal. ________ System reset input terminal. Pull-up resistor is built-in. (Hysteresis input). VDD1 —...

  • Page 31: Ic Block Diagram

    IC BLOCK DIAGRAM IC, BA5915FP IC, M62439SP 6.65K 6.65K 6.65K 6.65K MUTE IC, LA1837NL T.S.D: Thermal shut-down Resistors are in units of Ω. IC, SN74LV74APW IC, LC72131...

  • Page 32: Electrical Adjustment

    ELECTRICAL ADJUSTMENT...

  • Page 33: Practical Service Figure

    PRACTICAL SERVICE FIGURE LCD DISPLAY < TUNER SECTION > < TAPE SECTION > < FM SECTION > Tape speed: 3000Hz+3%/–2% IHF Sensitivity: Less than 15dB (at 87.5MHz) Wow & flutter: Less than 0.35% (JIS, R.M.S) (THD 3%) Less than 19dB Distortion: Less than 3.0% (PB) (at 98.0/108.0MHz)

  • Page 34: Mechanical Exploded View 1/1

    MECHANICAL EXPLODED VIEW 1/1 P.C.B HLDER,CORD HLDR,LCD P.C.B HT-SINK HLDER,LOCKER P.C.B P.C.B TN-21ZSC-1653 SHILD PLATE TRANS KSM-2131 BDM HLDR,TRANS...

  • Page 35: Mechanical Parts List 1/1

    REF. NO PART NO. KANRI DESCRIPTION 1 88-CG6-007-010 WINDOW,DISPLAY 26 87-036-368-010 MAGNET 2 88-CG6-005-010 PANEL,FRONT 27 88-CD9-210-010 BASE,CHUCK 3 84-CD8-083-010 BADGE,AIWA 30.5-5.2 2.5LEAD 28 84-CT5-209-010 PLATE,MAGNET 4 88-CL6-019-010 KEY,CD 29 88-CG6-004-010 DOOR,CD 5 88-CL6-007-010 LENS,CASS 30 88-CL6-031-010 WINDOW,CD 6 88-CG6-003-010 DOOR,CASS...

  • Page 36: Tape Mechanism Exploded View 1/1

    TAPE MECHANISM EXPLODED VIEW 1/1...

  • Page 37: Tape Mechanism Parts List 1/1

    TAPE MECHANISM PARTS LIST 1/1...

  • Page 38: Cd Mechanism Exploded View 1/1

    CD MECHANISM EXPLODED VIEW 1/1 COVER SPINDLE MOTOR SPINDLE MOTOR (M3) (M1) MOTOR C.B MOTOR-1 C.B CD MECHANISM PARTS LIST 1/1 REF. NO PART NO. KANRI DESCRIPTION 1 9X-262-587-010 MOTOR CHASSIS ASSY 2 92-626-907-010 GEAR(A) 6 98-848-376-110 OPTICAL PICK UP KSS-213B RP 7 92-626-908-010 SHAFT SLED 8 92-627-003-010...

  • Page 39: Accessories/Package List

    ACCESSORIES/PACKAGE LIST REF. NO PART NO. KANRI DESCRIPTION 1 88-CL5-628-010 ANT,LOOP 2 88-CG6-901-010 IB,H(EC-H)B 3 87-A90-312-010 PLUG,CONVERSION WTN-1157R1 4 88-CG6-951-010 RC UNIT,RC-8AT05...
  • Page 40 2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:03 (3827) 3111 Printed in Singapore 931196...

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